Douglas CountyPower Outage History
2020–2025 · South Dakota
Top 20% most reliable nationally — infrequent, short outages. This county ranks in the most reliable fifth of all US counties in our dataset, based on 12 years of real DOE outage records: outages happen less often here, and when they do occur they tend to be resolved quickly compared to the rest of the country. Baseline outage risk is low, though a severe local storm can still occasionally cause a longer-than-usual outage regardless of the long-term track record.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jun 9, 2020 | 7 hrs | 973 (37%) | Funnel Cloud |
| Aug 31, 2020 | 1 hrs | 834 (32%) | Unnamed event |
| Sep 6, 2020 | 2 hrs | 834 (32%) | Unnamed event |
| Sep 7, 2020 | 2 hrs | 834 (32%) | Unnamed event |
| Oct 22, 2020 | 1 hrs | 773 (30%) | Winter Weather |
Over the 6 years from 2020 to 2025, Douglas County recorded 53 distinct power outage events, averaging 2.2 hours per event.
The single worst outage on record in Douglas County started June 9, 2020 (Funnel Cloud), lasting 7 hours and leaving up to 973 customers without power (37% of the county) at its peak.
July has historically been the worst month for outages in Douglas County, with 12 events recorded during that month across the dataset.
Based on this history, Douglas County earns a Reliability Grade of A, placing it in the 90th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Douglas County's outage profile
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Read our mission →Similar counties in South Dakota
Counties with the closest reliability grade and national percentile to Douglas County.
| County | Grade | National percentile |
|---|---|---|
| Hutchinson County | A | 90th |
| Brookings County | A | 91st |
| Davison County | A | 90th |
| Charles Mix County | A | 90th |
| Brown County | A | 90th |
Most reliable counties in South Dakota
The top 3 counties in South Dakota by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Clay County | A | 100th |
| Codington County | A | 98th |
| Tripp County | A | 98th |
Least reliable counties in South Dakota
The bottom 3 counties in South Dakota by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Harding County | D | 21st |
| Perkins County | D | 29th |
| Custer County | D | 30th |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Douglas County?
Between 2020 and 2025, Douglas County recorded 53 outage events, averaging 2.2 hours each.
What is Douglas County's reliability grade?
Douglas County has a Reliability Grade of A, in the 90th national percentile.
What was the worst power outage in Douglas County?
The worst outage on record started June 9, 2020 (Funnel Cloud), lasting 7 hours and affecting up to 973 customers.